What question did this study set out to answer?

To assess the fate of coronary bypass grafts through angiographic grading early after operation and at one year post-surgery.

June 1, 1978CirculationOpen Access

Coronary bypass graft fate: angiographic grading of 1400 consecutive grafts early after operation and of 1132 after one year.

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Randomized trial evaluates graft patency in coronary bypass operations, suggesting the predictive value of grading.

To assess the fate of coronary bypass grafts through angiographic grading early after operation and at one year post-surgery.
1400 grafts assessed in 414 bypass operations, with angiograms taken pre-discharge and at one year
Grafts graded A (excellent), B (fair), O (occluded) based on anastomoses assessment
Comparative analysis of different graft types and corresponding patency rates at one year
89% of grafts were patent after initial grading; 81% remained patent at one year
74% of grafts graded A initially maintained this status after one year
Distinct patency rate differences between side-to-side and end-to-side coronary anastomoses were observed.

FitzGibbon et al. (1978) studied this question.

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